You mean headphones? =3It's a material made of Polyurethane, I don't know the english word for it, but it's used in design stuff :3And paper, fabric and leather, the microphone is from old headphones I had C:

Choi-chan... Don't tell anyone, but it's not well done... I lack 2 headpieces, 02 number on my arm, stripe on the blouse, yellow things on legwarmers and everything's made in the last second... And it's the most hoeeible costume I've ever made .-. But cool photographer made it look good xD